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Re: HSC 2013 2U Marathon I thought you were a 3 unit student.

Re: HSC 2013 2U Marathon Just noticed two things: I haven't seen any sole 2U students post here yet. The other thing I notice I will keep a secret.

Re: HSC 2013 4U Marathon I don't know really my teachers from high school told me this. But yeah what if they are trying to test a certain concept.

I currently play L4D2/1 and KF. I was wondering what other good zombie games are out there for PC? Also there is a really cool zombie game called Dying Light coming in 2014.

Do the cross method and practice it heaps and you can immediately tell. For me I visualise the cross method and make a good guess of what numbers to put in the brackets.

Re: HSC 2013 4U Marathon I was informed that if you use a method that is not within the bounds of the syllabus they will still mark it. Could I be wrong?

If I were a parent I wouldn't let me child go on schoolies to be honest. Teenagers these days.

I don't think it is too (something like this would surely be left for 4U). There are other variants to mathematical induction, you guys only learn the first principle of mathematical induction.

I thought schoolies was going to somewhere popular. Actually I thought schoolies is exactly what you mentioned above.

I don't see the whole point of schoolies why not organise a trip with your friendship circle?

Re: HSC 2013 4U Marathon Yes But some teachers may not like it. Or even know the method. There was a conics question I remember that it would be more faster to use it. I think it's better practice to use the hence.

I don't see why people feel the need to meet others in certain places. Just go to your natural place (i.e where you'd normally go on a day to day basis) and talk to more guys.

Re: HSC 2013 4U Marathon :O Back to complex numbers are we? $Suppose we have$\; 4\;$squares$\;A, B, C, D\; $with centres$\;p, q, r, s \;$respectively arranged as shown in the diagram below. Prove that the line segments joining the centres of the opposite squares are equal in length and also...

Why not

Re: MX2 Integration Marathon I tricked you guys, this is a simple integral that requires the observation: (Level 1 question ;p) (\sqrt{x}-\sqrt{1-x})^2= 1-2\sqrt{x-x^2}

Re: HSC 2013 2U Marathon Therefore hence? :P

I don't believe iff is used in any paper HSC except in some books. You'll deal with it plentifully in later maths especially discrete For now your proofs are either direct or via contradiction

What do they want you to do?

What have you tried? If z is an element of the complex field, then z can be written in the form z=______. We also note that z/(z-1) is real. That means Im(z) = ? The above is a common way, can you spot another method? Edit: question is wrong see below. Methods still remain valid.

I don't see the need for more than because you've essentially done & stated it in the base step and inductive step. "Hence by mathematical induction the proposition is true for all integers n > 0." Even though it is claimed to be not mark you should still do it in non-exam situations because it...